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Disclosery

GROUP ONE TRADING LLC: SLG position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GROUP ONE TRADING LLC on SLG, newest first. How the timeline and the estimate are built.

GROUP ONE TRADING LLC held 44,765 SLG shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 44,765 shares
    Change vs previous 13F +17,163 shares

    0.07% of the 13F portfolio, value $2,317,484.

    13F-HR 0000932540-26-000011 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 27,602 shares
    Change vs previous 13F -248,905 shares

    0.03% of the 13F portfolio, value $1,019,618.

    13F-HR 0000932540-26-000005 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 276,507 shares
    Change vs previous 13F +158,817 shares

    0.38% of the 13F portfolio, value $12,683,376.

    13F-HR 0000932540-26-000002 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 117,690 shares
    Change vs previous 13F -217,895 shares

    0.21% of the 13F portfolio, value $7,039,039.

    13F-HR 0000932540-25-000040 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 335,585 shares
    Change vs previous 13F +255,437 shares

    0.68% of the 13F portfolio, value $20,772,712.

    13F-HR 0000932540-25-000034 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 80,148 shares
    Change vs previous 13F +50,125 shares

    0.19% of the 13F portfolio, value $4,624,540.

    13F-HR 0000932540-25-000027 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F/A 30,023 shares
    Change vs previous 13F +29,290 shares

    0.07% of the 13F portfolio, value $2,039,162.

    13F-HR/A 0000932540-25-000028 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 733 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $51,024.

    13F-HR 0000932540-24-000015 filed by GROUP ONE TRADING LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).